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Contents
module Neo4j::Core
module CypherTranslator
# Cypher Helper
def escape_value(value)
result = case value
when String
sanitized = sanitize_escape_sequences(value)
"'#{escape_quotes(sanitized)}'"
else
value
end
result
end
# Only following escape sequence characters are allowed in Cypher:
#
# \t Tab
# \b Backspace
# \n Newline
# \r Carriage return
# \f Form feed
# \' Single quote
# \" Double quote
# \\ Backslash
#
# From:
# http://docs.neo4j.org/chunked/stable/cypher-expressions.html#_note_on_string_literals
SANITIZE_ESCAPED_REGEXP = /(?<!\\)\\(\\\\)*(?![futbnr'"\\])/
def sanitize_escape_sequences(s)
s.gsub SANITIZE_ESCAPED_REGEXP, ''
end
def escape_quotes(s)
s.gsub("'", %q(\\\'))
end
# Cypher Helper
def cypher_prop_list(props)
return "" unless props
properties_to_set = props.reject {|k,v| v.nil? }
list = properties_to_set.map{|k,v| "#{k} : #{escape_value(v)}"}.join(',')
"{#{list}}"
end
# Stolen from keymaker
# https://github.com/therubymug/keymaker/blob/master/lib/keymaker/parsers/cypher_response_parser.rb
def self.translate_response(response_body, result)
Hashie::Mash.new(Hash[sanitized_column_names(response_body).zip(result)])
end
def self.sanitized_column_names(response_body)
response_body.columns.map do |column|
column[/[^\.]+$/]
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems